view tk/gi3.lite @ 2:1c57a78f1d98

Initial revision
author kono
date Thu, 18 Jan 2001 23:27:24 +0900
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%
% specification for simple graphics interaction
%

specification((
+((
    keep((red,not(start)));
    ((start,[](green),length(3)) & 
    next(keep((red,not(stop),not(start)))))
 )),
[]((red,not(green);not(red),green)),
[]((green->move)),
[]((red->not(move))),
halt(quit)
)).
st_variables([stop,start,quit],[red,green,move]).